// Copyright (C) 2016 The V8 Project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-math.clz32
description: >
  Catches the int32bit value in the ToUint32 operation
info: |
  Math.clz32 ( x )

  1. Let n be ToUint32(x).
  2. Let p be the number of leading zero bits in the 32-bit binary representation of n.
  3. Return p.

  7.1.6 ToUint32 ( argument )

  [...]
  3. Let int be the mathematical value that is the same sign as number and whose
  magnitude is floor(abs(number)).
  4. Let int32bit be int modulo 232.
  5. Return int32bit.
  [...]
---*/

function Test() {
    assert.sameValue(Math.clz32(4294967295), 0, "2**32-1");
    assert.sameValue(Math.clz32(4294967296), 32, "2**32");
    assert.sameValue(Math.clz32(4294967297), 31, "2**32+1");

    assert.sameValue(Math.clz32(65535), 16, "2**16-1");
    assert.sameValue(Math.clz32(65536), 15, "2**16");
    assert.sameValue(Math.clz32(65537), 15, "2**16+1");

    assert.sameValue(Math.clz32(255), 24, "2**8-1");
    assert.sameValue(Math.clz32(256), 23, "2**8");
    assert.sameValue(Math.clz32(257), 23, "2**8+1");

    assert.sameValue(Math.clz32(-4294967295), 31, "-(2**32-1)");
    assert.sameValue(Math.clz32(-4294967296), 32, "-(2**32)");
    assert.sameValue(Math.clz32(-4294967297), 0, "-(2**32+1)");

    assert.sameValue(Math.clz32(-65535), 0, "-(2**16-1)");
    assert.sameValue(Math.clz32(-65536), 0, "-(2**16)");
    assert.sameValue(Math.clz32(-65537), 0, "-(2**16+1)");

    assert.sameValue(Math.clz32(-255), 0, "-(2**8-1)");
    assert.sameValue(Math.clz32(-256), 0, "-(2**8)");
    assert.sameValue(Math.clz32(-257), 0, "-(2**8+1)");
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_TEST; i++) {
    Test();
}
